Shutter worker



(No Model.)

A. H. DODD.

SHUTTER WORKER.

No. 360,146. Patented Mar. 29, 1887.

N. PEIERS. MLRMMI. wamin mn. D C.

FFICE.

ATENT ALVIN H. DODD, OF HUDSON, NE? YORK.

SHUTTER-WORKER.

SPECIPICATIGN forming part. of Letters Patent No.360,146, dated March 29, 1887.

Application filed October 12, 1885. Serial No. 179,614. (No model.)

To all whom it may concern.-

Be it known that I, ALVIN H. Donn, of Hudson, in the county of Columbia and State of New York, have invented a new and useful Improvement in ShutterfiVorkers, of which the following is a specification.

Hy invention consists in a shutter-worker which is composed of two plates or members provided with bearers which are pivoted together, one of which is attached to the window-casing and the other connected with the blind, the bearer of the plate or member which is connected with the blind being constructed with a gear segment or sector, and the other plate or member having journaled within it a worm orscrew for operating on the gear segment or sector, and to be turned by a rod extending inward through the windowcasing.

The invention consists in a novel combination of parts,hereinafter described, and pointed out in the claim, which includes a novel construction of the plate or member which is to be attached to the window-casing and a novel means of retaining the worm or screw in its socket in said plate or member.

In the accompanying drawings,Figure 1 represents ahorizontal section of a portion ot'a window-casingand blind,to which is applied a sh utter-worker embodying my invention; and Fig. 2 is a transverse section on the plane of the dotted line :0 :0, Fig. 1, and upon a larger scale, illustrating a locking device which forms no part of my invention, and which may be employed for holding the operating shaft or red against turning.

Similar letters of reference designate corresponding parts in both figures.

A designates the window-casing,constructed with the usual weight-boxes, A, which receive the weights, whereby the lower sash, B, and the upper sash (not here shown) are balanced.

G designates the blind, which is hinged at one side of the window-casing, as I shall now describe.

D E designate two cast-metal plates or members which compose my worker, the member D being connected with the blind and the member or plate E being secured by screws to the outer face of the window-casing. In this example of my invention the member D also consists of a plate secured to the blind-stile. The members D E have outwardly-projecting bearers d e, secured together by a pin or pivot, f, and, as here shown, the bearer d is very much shorter or has less projection from its plate D than has the bearer c from the plate E, thereby permitting the plates to be properly secured to the blind and easing when the blind C closes against the outer face of the casin g,and projects outward from the casing a distance equal to the thickness of the blind-stile. The bearer (Z is constructed with a gear segment or sector, d, and the plate E carries a worm or screw, F, which engages with said gear-segment to turn the bearer d and swing the blind. The worm or screw F is operated by ashaft or rod, G, which extends through the casing A, and at the inner end is provided with a crank or handle, G. In order to prevent the worm or casing from being turned,by pinchers or otherwise, by a person outside the building, I have represented a locking pawl or catch, 9, which is pivoted to the bearingplate H, in which the rod or shaft G is journaled, and engages a notch, y, in the hub of the crank G, as shown in Fig. 2. This looking device is not included in my invention.

The worm F is inclosed in a cylindric casing, E, consisting of a socket formed in the hub, projecting on the outer side of the plate E, and the worm is secured by a pin, 1), to the shaft G. The tubular casing or socket E is joined to the plate E by arms 6, forming between them lateral openings 8 for a purpose hereinafter described. In the plate E is formed a hole or opening, 6 which is concentric with the axis of the tubular casing E, and is of such size as to permit of the worm or screw F being slipped directly through it into the casing This construction provides for running a rose-bit, if desired, through the hole or opening 0 into the tubular casing E, in order to smooth or finish the interior thereof and remove any burrs or projections thereon. The worm or screw F may then have a bearing directly upon the wall of this casing, and when the worm or screw is operated to turn the segment or sector d it will be held firmly in engagement therewith by its bearing against the wall of the tubular casing E opposite the segment or sector.

The tubular casing or socket E is closed at the outer end, so as to form a thrust-bearing for the Worm or screw to prevent its outward movement, and the worm or screw being introduced through the hole or opening 6 into the tubular casing or socket it is necessary to employ an abutment to form a thrust-bearing for preventing inward movement of the'worm or screw. The abutment here shown consists ofa Washer, 0, which is o'f larger size than the hole or opening 6 and has a hole of sufficient size only to receive the shaft G. After the worm or screw F is inserted through the hole or opening 0 into the socket E the washer or abutment c is slipped laterally between the arms 6' into position concentric with the worm or screw F, and the shaft G, being inserted through the washer, holds the latter in place 'over the hole or opening 6'', and bears against the outer face of the plate or opening.

What I claim as my invention, and desire to secure by Letters Patent, is

E around said hole The combination of the two members of the shutter-worker pivoted together, one being provided with a gear-segment, d, and the other consisting of a plate, E, to be secured to the outer face of the window-casing, and

constructed with an upwardly-projecting cyrate from the plate E, closing the hole e about the shaft and forming a thrust-bearing for the inner end of the worm, substantially as herein described. v

' ALVIN H. DODD.

\Vitnesses: v

O. HALL, HENRY lVIOBRIDE. 

